This 69 pose is really challenging and not for everyone. To perform this unusual 69 the chair must be having very good padding as it will be a lot of pressure exerted on her shoulders.
Steps to perform:
Step 1: It requires a chair which has pretty good padding on the base.
Step 2: She lifts her legs and rests them on the edge of the back of the chair and torso is on the base.
Step 3: He comes close to her and grabs her torso for support.
Step 4: Now both of them are ready to give a fair oral to each other.